https://bugs.llvm.org/show_bug.cgi?id=42857
Bug ID: 42857
Summary: "Function already has body?" assert on explicitly
defaulted non-trivial dllexport ctor during explicit
template instantiation
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: LLVM Codegen
Assignee: h...@chromium.org
Reporter: h...@chromium.org
CC: alexandre.ga...@ubisoft.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
struct Bar { Bar(); };
template <typename T> struct Foo { __declspec(dllexport) Foo() = default; Bar
b; };
template class Foo<int>;
$ clang -c -target i686-pc-win32 /tmp/b.cc
clang-9: /work/llvm.monorepo/clang/lib/CodeGen/CodeGenFunction.cpp:662: void
clang::CodeGen::CodeGenFunction::StartFunction(clang::GlobalDecl,
clang::QualType, llvm::Function*, const clang::CodeGen::CGFunctionInfo&, const
clang::CodeGen::FunctionArgList&, clang::SourceLocation,
clang::SourceLocation): Assertion `CurFn->isDeclaration() && "Function already
has body?"' failed.
Reported by Alexandre here: https://reviews.llvm.org/D65511#1608860
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